WO2008110040A1 - Combinateur à double fréquence - Google Patents

Combinateur à double fréquence Download PDF

Info

Publication number
WO2008110040A1
WO2008110040A1 PCT/CN2007/001161 CN2007001161W WO2008110040A1 WO 2008110040 A1 WO2008110040 A1 WO 2008110040A1 CN 2007001161 W CN2007001161 W CN 2007001161W WO 2008110040 A1 WO2008110040 A1 WO 2008110040A1
Authority
WO
WIPO (PCT)
Prior art keywords
coaxial
port
resonant
electrically connected
band pass
Prior art date
Application number
PCT/CN2007/001161
Other languages
English (en)
Chinese (zh)
Inventor
Yingjie Di
Tao He
Bin He
Mengmeng Shu
Jingmin Huang
Original Assignee
Comba Telecom System (China) Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Comba Telecom System (China) Ltd. filed Critical Comba Telecom System (China) Ltd.
Priority to US12/668,298 priority Critical patent/US8306067B2/en
Publication of WO2008110040A1 publication Critical patent/WO2008110040A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
    • H01P1/2136—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies using comb or interdigital filters; using cascaded coaxial cavities

Definitions

  • the present invention relates to a processing apparatus for combining between a second generation and a third generation communication system, and more particularly to a Han frequency combiner. Background technique
  • the Han frequency combiner is an indispensable microwave device. Its main function is to split the signals of different systems to save the feeder cable, simplify the system and reduce the cost. purpose.
  • the power supply of the equipment on the base station tower is realized by the radio frequency cable, so that the combiner connected in series with the feeder cable also has the function of transmitting direct current.
  • the combiner is a three-port microwave device comprising a two-way DC feed path and two RF signal paths, wherein: the DC feed path is composed of a lumped parameter low-pass filter, switch and The lightning device is composed of a low-pass filter for suppressing high-frequency RF signals to allow a control signal of a certain frequency (such as 3 ⁇ z) to pass smoothly, and the switch is used to select whether or not direct current is required to pass; the RF signal path is separated by a DC blocking capacitor and a band pass.
  • the filter consists of a band-pass filter in the two RF signal paths that adapts to the frequency range setting of the two signals of the combined path.
  • the signal input from the public port Port l is split to the port Port2 or port Port 3 according to the frequency range. Conversely, the signals input from the ports Port2 and Port 3 can also be combined and output via the port Portl.
  • the RF signal frequency range of the 2G/3G total antenna system is 806MHz - 960MHz and 1710MHz - 2170MHz.
  • most of the current combiner products use a medium substrate.
  • Implemented in the form of a circuit The disadvantage of this type of product is that it is bulky and has a small power capacity.
  • the passive intermodulation index depends greatly on the characteristics of the dielectric substrate material and is difficult to control in mass production.
  • the present invention adopts the following technical solutions:
  • a dual-frequency combiner includes a combined port, a first port corresponding to receiving a first frequency band, and a second port corresponding to receiving a second frequency band, and two coaxial resonant bandpass filters and two DCs Pathway
  • the first DC path is connected between the first port and the combined port;
  • the second DC path is connected between the second port and the combined port;
  • the first coaxial resonant bandpass filter is electrically connected to the first port through a first DC blocking capacitor;
  • the second coaxial resonant bandpass filter is electrically connected to the second port through a second DC blocking capacitor;
  • the other ends of the first and second coaxial harmonic band pass filters are electrically connected to the combining port through the third DC blocking capacitor;
  • the first DC path includes a first low pass filter electrically connected to the first DC blocking capacitor;
  • the second DC path includes a second low pass filter electrically connected to the second DC blocking capacitor;
  • the second DC path further includes a third low pass filter electrically connected to the third DC blocking capacitor;
  • the first and second coaxial resonator band pass filters are disposed in a case, the case includes a body, a cover plate and a cover body, and the body is provided with the two coaxial resonances separated by a metal plate a sub-band pass filter, the combining side is provided with the combining port, the first and second ports, and the blocking capacitors are disposed in the coaxial cavity of the two coaxial harmonic band pass filters; a cover plate is fixed on the body; the first and second DC paths are disposed on the cover plate, wherein each of the first and second DC path passages is fixed to the coaxial cavity by a support member An edge of the upper surface; the cover is pinned to the body.
  • a gap of not less than 0.2 mm is left between the upper surface of the support member and the bottom surface of the cover plate to ensure Prove good electrical performance of the RF signal.
  • each of the DC blocking capacitors is a distributed parametric capacitor.
  • each of the blocking capacitors comprises an inner conductor, an insulator and a sleeve, the insulator is sleeved on the outer periphery of the inner conductor, and the sleeve is sleeved on the outer periphery of the insulator, and the sleeve is used for the first and/or second
  • the coaxial resonant bandpass filter is electrically connected; the inner conductor is for electrically connecting to the first and/or second DC path, and further to the port adjacent thereto.
  • the first and second coaxial resonator band pass filters each include a coaxial cavity and a plurality of resonant columns sequentially arranged in the coaxial cavity.
  • a spine for enhancing the coupling effect is provided between two adjacent resonator columns.
  • the number of resonant columns of the first coaxial resonant bandpass filter is five; and the number of resonant columns of the second coaxial resonant bandpass filter is six.
  • the cover plate is provided with two coaxial resonant resonator band pass filters provided with a plurality of tuning screws penetrating the cover plate into the two coaxial cavities for adjusting the resonant frequency and the coupling amount of the coaxial resonator.
  • a through hole may also be formed in the cover plate, and the through hole is covered with a Gore gas permeable membrane.
  • the present invention has the following beneficial effects:
  • the 2G/3G dual-frequency combiner realized by the coaxial resonant band-pass filter of the present invention realizes the between the direct current path and the radio frequency signal path by using a unique manner. Isolated from each other.
  • the application of the distributed parametric DC-blocking capacitor enables the application of the product of the present invention to greatly reduce the volume.
  • the overall structure of the present invention is laid out, and the improvement of the structure also brings about small loss, large power capacity, and channel-to-channel isolation. High degree and other advantages.
  • FIG. 1 is a schematic block diagram of the present invention
  • Figure 2 is a perspective view of the combined structure of the product of the present invention.
  • Figure 3 is an enlarged view of a portion A of Figure 2;
  • Figure 4 is a longitudinal cross-sectional view of the first coaxial resonator sub-band pass filter of Figure 2;
  • Figure 5 is a longitudinal cross-sectional view of the second coaxial resonator bandpass filter of Figure 2;
  • Figure 6 is a schematic diagram of the DC circuit of the cover of Figure 2.
  • the dual-frequency combiner of the present invention is mainly used for combining 2G and 3G signals.
  • the dual-frequency combiner of the present invention is mainly used for combining 2G and 3G signals.
  • the combiner is a box body as a whole, and is composed of a body 6, a cover plate 2 and a cover body 4.
  • the first port Port2 and the second port Port 3 are disposed on the left side of the body 6, respectively for receiving RF signals of 806 - 960 MHz and 1710 - 2170 MHz, and the right side of the body 6 is provided with the port Port l, the port of Port1
  • the combined RF signals of the first and second ports (Port 2 and Port 3) may be output, or the input signals may be split to the first or second ports (Port 2 and Port 3).
  • Two RF channels are integrated on the body 6, that is, a first RF path and a second RF path.
  • the first RF path is connected to the first port Port2 and the DC capacitor (not shown in the figure, refer to the third DC blocking capacitor).
  • 68), the coaxial resonant bandpass filter (610 and 611), the third DC blocking capacitor 68, and the combined port are electrically connected in sequence;
  • the second RF path is composed of the second port Port 3 and the second DC blocking capacitor (Not shown in the figure, refer to the third DC blocking capacitor 68), the coaxial resonant band pass filters (620 and 621), the third DC blocking capacitor 68, and the combining port are electrically connected in sequence.
  • each of the RF paths includes coaxial resonant sub-bandpass filters (610 and 611; 620 and 621), and also collectively includes the third DC blocking capacitor 68.
  • Each of the coaxial harmonic band pass filters (610 and 611; 620 and 621) includes a coaxial cavity 610, 620 and a plurality of resonant columns 611, 621.
  • a cavity formed in the middle of the body 6 is A metal plate is divided into two coaxial cavities 610, 620, corresponding to the first RF cavity 610 being the first coaxial cavity 610, and corresponding to the second RF cavity being the second coaxial cavity 620.
  • the separation of the metal plates 63 provides a higher degree of isolation for the first and second RF paths.
  • a 5 ⁇ resonant column 611 is arranged side by side, wherein the resonant column adjacent to the first port Por t2 passes through the wire and the first direct current
  • the capacitor (see 68) is further electrically connected to the first port Port2, and the last resonant column of the distal end is electrically connected to the third blocking capacitor 68 through a wire 671.
  • the second coaxial cavity 620 is arranged side by side with six resonant columns 621, which are adjacent to the resonant column of the second port Port 3 through the wire and the second DC blocking capacitor (see 68) and then the second port Port 3
  • the first connection is also electrically connected to the third DC blocking capacitor 68 via a wire 672.
  • the metal plate 63 between the two coaxial resonator band pass filters (610 and 611; 620 and 621) does not completely block the connection of the two coaxial cavities 610, 620.
  • the first, second and third DC blocking capacitors have the same structure as the third DC blocking capacitor 68.
  • the third DC blocking capacitor 68 specifically includes an inner conductor 683, an insulator 682 and a sleeve 681, and the insulator 682 is sleeved.
  • the sleeve 681 is sleeved on the periphery of the insulator 682, and the insulator 682 is realized by a dielectric film.
  • the sleeve 681 is simultaneously electrically connected to the last one of the first and second coaxial i-perimeter bandpass filters (610 and 611; 620 and 621), and the inner conductor 683 is directly connected. To the port port Portl.
  • the sleeve 681 and the inner conductor 683 can be insulated by the insulator 682 to form a distributed parametric capacitor.
  • the RF signal is transmitted through the coupling between the inner conductor 683 and the sleeve 681, and the DC is transmitted.
  • the current cannot pass through the sleeve 681, thus achieving the effect of the RF path blocking the DC current.
  • the first and second DC blocking capacitors have the same structure as the third DC blocking capacitor 68, but the first DC blocking capacitor (not shown) is only bandpass filtered with the first coaxial resonator.
  • the first resonant column adjacent to the second DC blocking capacitor is connected, and the second DC blocking capacitor (not shown) is connected to the second coaxial resonant bandpass filter and the second spacer
  • the first resonant column adjacent to the straight capacitor is connected.
  • the inner conductors of the respective DC blocking capacitors are taken out from the ports Port1, Port2, and Port3, and therefore are naturally electrically connected to the respective ports.
  • a printed circuit board is fixed on the cover plate 2, and the circuit shown in FIG. 6 is printed.
  • the cover plate 2 just covers the two coaxial cavities 610, '620 upper surface of the body 6.
  • the pathways are well known in the art, and only the bills are summarized as follows:
  • two DC paths namely a first DC path and a second DC path
  • the DC path is mainly composed of a low pass filter 201, 202, 203, a switch, and a lightning protection device 205. And so on.
  • the signal is filtered by the first/second low-pass filter 202/203, and then synthesized, and output to the third low-pass filter.
  • the device 201 is then output to the combined port Port1.
  • the low pass filters 201, 202, 203 function primarily to reject high frequency signals and pass control signals below 3 MHz.
  • a switch can be provided in the two DC paths as needed to select whether DC power is required to pass; a lightning protection device 205 such as a discharge tube can also be provided.
  • the printed circuit diagram of Fig. 6 shows the access points 281, 282, 283 of the three low pass filters 201, 202, 203, and the three low pass filters 201, 202, 203 are independently arranged on the three supports.
  • the three supporting members are respectively disposed, and each of the supporting members is provided with the Low pass filters 201, 202, 203.
  • the low-pass filters 201, 202, 203 are connected to the adjacent ports of Port1, Port2, and Port3, and specifically, the third low-pass filter 201 and the third DC-blocking capacitor 68.
  • the inner conductor 683 is electrically connected, and the end of the first low-pass filter 202 is electrically connected to the inner conductor of the first DC blocking capacitor (not shown), and the end of the second pass filter 203 is The inner conductor of the second DC blocking capacitor (not shown) is electrically connected.
  • the other end of the low pass filters 201, 202, 203 is provided with contacts 26 in contact with the access points 281, 282, 283 in the printed circuit diagram shown in Fig. 6, and the cover 2 is provided with corresponding three touches.
  • the access points 281, 282, 283 are just engaged with the contacts 26 of the three low pass filters 201, 202, 203 on the three supports, and the low pass filters 201, 202, 203 are also successfully connected to the associated
  • the DC path, the cover and the upper surface of the support are preset to a gap of not less than 0.2 mm to ensure the RF signal. No. Good electrical performance.
  • the switch is implemented by a magnetic bead 208 connected to the circuit for suppressing high frequency signals.
  • the magnetic beads 208 can be removed to disconnect the front and rear, and the magnetic beads 208 can be used to restore the circuit.
  • the third low-pass filter 201 is electrically connected to the combined port Port1 through the inner conductor 683 of the third DC blocking capacitor 68 through the wire T11, and the second and third portions are electrically connected.
  • the low pass filters 202, 203 are also similar. In this way, the technical problem that the DC path and the RF path are commonly connected to the combined port Port l is realized.
  • two coaxial resonator band pass filters (610 and 611; 620 and 621) corresponding to the body 6 on both sides of the cover 2 are also provided with a plurality of tuning screws 69 corresponding to the first coaxial resonator.
  • the band pass filters (610 and 611) are provided with 9 tuning screws 69 on one side and 11 on the other side.
  • the tuning screw 69 passes through the cover plate 2, and when the cover plate 2 and the body 6 are fixed, it can penetrate into the interior of the two coaxial cavities 610, 620, and is mainly used to adjust two coaxial resonant bandpass filters ( Resonant frequency and coupling amount of the resonators of 610 and 611; 620 and 621).
  • FIG. 4 it is a schematic longitudinal cross-sectional view of the first coaxial resonant sub-band pass filter (610 and 611) of FIG. 1, belonging to a first RF path between the first port Port2 and the combined port Port1,
  • the strong coupling between the resonant columns 611 is realized, and the spine 616 is further disposed between the two adjacent resonant columns 611.
  • the heights of the spines 616 are different, and can be adjusted according to actual conditions, and a circle is further added to the top of the resonant column 611. 5 ⁇
  • FIG. 5 is a schematic longitudinal cross-sectional view of the second coaxial resonator (620 and 621) of FIG. 1, belonging to a second RF path between the second port Port 3 and the combined port Port1.
  • Different heights of the spine 626 are also added between the respective resonant columns 621 to achieve strong coupling between the resonant columns 621, and the passband frequency is 1710 - 2170 MHz.
  • FIG. 2 Please refer to FIG. 2 again, which also shows the cover body 4 of T, which is used for covering the body 6.
  • the internal parts are protected, and a rubber ring can be attached around the periphery to enhance the waterproof performance and protect the internal circuit.
  • a through hole is further provided on the surface of the cover 2, and a Gore gas permeable membrane 40 is disposed on the through hole for maintaining pressure balance between the inside and the outside of the body 6.
  • the inner surface of the two coaxial cavities 610, 620 is plated with silver, which can greatly reduce the attenuation of the RF signal during transmission, so that the insertion loss of the signal in the passband is less than 0.2 dB.
  • the present invention overcomes the deficiencies of the prior art and brings about the following positive effects:
  • Small size The combiner of the present invention can be reduced in size to 174 fibers * 105 legs * 61 legs.
  • the telescopic coupling structure makes full use of the space of the inner conductor passing through the inner wall of the combined port Portl, which realizes the coupling of the radio frequency signal without occupying extra space.
  • Adding a lumped-parameter low-pass filter to the DC feed path and the RF signal path not only ensures isolation between the DC feed path and the RF signal path, but also greatly reduces the size of the PCB board of the cover.
  • each RF path is a closed waveguide cavity structure, this greatly increases the isolation between the channels.
  • the isolation of the first port Port2 to the RF signal in the 1710 - 2170MHz band is greater than 85dB, and the isolation of the second port Port 3 to the RF signal in the 806-960MHz band is greater than 65dB.
  • the average power per port is up to 250 watts.

Landscapes

  • Control Of Motors That Do Not Use Commutators (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

La présente invention concerne un combinateur à double fréquence qui comprend un premier filtre passe-bande à résonateur coaxial (610, 611) et un second filtre passe-bande à résonateur coaxial (620, 621) qui sont disposés dans un boîtier. Le boîtier comprend un coffret (6), une sangle (2) et un couvercle (4). Sur le coffret (6) se trouvent le premier filtre passe-bande à résonateur coaxial (610, 611) et le second filtre passe-bande à résonateur coaxial (620, 621) qui sont séparés par une feuille métallique. Un port de combinaison (Port1), un premier port (Port2) et un second port (Port3) sont disposés sur le côté du coffret (6). Chaque condensateur de blocage est disposé dans la cavité coaxiale (610, 620) des deux filtres passe-bande à résonateur coaxial. La sangle (2) est fixée sur le coffret (6). Les premier et second canaux à courant continu sont disposés sur la sangle (2). Chaque filtre passe-bas dans les premier et second canaux à courant continu est fixé sur la bordure de la surface supérieure de la cavité coaxiale (610, 620) avec des éléments de support. Le couvercle (4) est verrouillé avec le coffret (6). Les condensateurs de blocage sont des condensateurs à paramètres répartis.
PCT/CN2007/001161 2007-03-12 2007-04-11 Combinateur à double fréquence WO2008110040A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/668,298 US8306067B2 (en) 2007-03-12 2007-04-11 Dual-frequency multiplexer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2007100271164A CN101267220B (zh) 2007-03-12 2007-03-12 双频合路器
CN200710027116.4 2007-03-12

Publications (1)

Publication Number Publication Date
WO2008110040A1 true WO2008110040A1 (fr) 2008-09-18

Family

ID=39758984

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2007/001161 WO2008110040A1 (fr) 2007-03-12 2007-04-11 Combinateur à double fréquence

Country Status (3)

Country Link
US (1) US8306067B2 (fr)
CN (1) CN101267220B (fr)
WO (1) WO2008110040A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2337145A1 (fr) * 2009-12-18 2011-06-22 Thales Diviseur de puissance et dispositif de filtre compactes et ajustables

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101267220B (zh) * 2007-03-12 2011-07-27 京信通信系统（中国）有限公司 双频合路器
GB2506377A (en) 2012-09-27 2014-04-02 Creo Medical Ltd Electrosurgical apparatus comprising an RF generator, microwave generator, combining circuit and waveguide isolator
CN103532511B (zh) * 2013-10-08 2016-11-16 桂林市思奇通信设备有限公司 一种同时具有分路器功能的合路器
GB201321710D0 (en) * 2013-12-09 2014-01-22 Creo Medical Ltd Electrosurgical apparatus
CN104319444B (zh) * 2014-10-31 2017-04-19 湖北三江航天险峰电子信息有限公司 一种兼容gps及北斗的双频腔体滤波器
DE102015011182B4 (de) * 2015-08-27 2023-04-06 Telefonaktiebolaget Lm Ericsson (Publ) HF-Filter in cavity Bauweise mit einer Umgehungsleitung für niederfrequente Signale und Spannungen
CN106684514B (zh) * 2016-11-16 2019-05-28 南通大学 一种差分双同轴腔体带通滤波器
CN107658535B (zh) * 2017-09-29 2019-12-20 中邮科通信技术股份有限公司 一种多系统集成一体化合路平台
CN111525350A (zh) * 2020-05-29 2020-08-11 京信通信技术(广州)有限公司 一种一体化射频连接器
CN112436277B (zh) * 2020-10-27 2023-04-14 中信科移动通信技术股份有限公司 阵列天线
CN113363688A (zh) * 2021-06-25 2021-09-07 国开启科量子技术(北京)有限公司 用于微波驱动离子的近场微波转换装置及方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1365582A (zh) * 1999-07-29 2002-08-21 亚历山大·V·加尔莫诺夫 带双工天线放大器的移动站(不同方案)
CN2595111Y (zh) * 2003-01-09 2003-12-24 奥雷通讯设备(上海)有限公司 移动通信多频段信号合路器
CN2657318Y (zh) * 2003-11-25 2004-11-17 杭州紫光通信技术有限公司 Cdma/gms双频合路器
EP1569333A1 (fr) * 2004-02-26 2005-08-31 Alps Electric Co., Ltd. Diplexeur

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5712641A (en) * 1996-02-28 1998-01-27 Electro-Radiation Incorporated Interference cancellation system for global positioning satellite receivers
US6429748B2 (en) * 1999-09-30 2002-08-06 Nortel Networks Limited Oscillation circuits featuring coaxial resonators
EP1687842A1 (fr) * 2003-11-11 2006-08-09 Showa Denko K.K. Procede de generation de radicaux, procede de gravure et appareil mis en oeuvre dans lesdits procedes
CN101267220B (zh) * 2007-03-12 2011-07-27 京信通信系统（中国）有限公司 双频合路器
CN101267219B (zh) * 2007-03-12 2011-10-26 京信通信系统（中国）有限公司 超宽带双频合路器
CN201018482Y (zh) * 2007-03-12 2008-02-06 京信通信系统（中国）有限公司 双频合路器
CN101312355B (zh) * 2007-05-23 2012-05-09 京信通信系统（中国）有限公司 Dcs/wcdma双频合路器及通用双频合路器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1365582A (zh) * 1999-07-29 2002-08-21 亚历山大·V·加尔莫诺夫 带双工天线放大器的移动站(不同方案)
CN2595111Y (zh) * 2003-01-09 2003-12-24 奥雷通讯设备(上海)有限公司 移动通信多频段信号合路器
CN2657318Y (zh) * 2003-11-25 2004-11-17 杭州紫光通信技术有限公司 Cdma/gms双频合路器
EP1569333A1 (fr) * 2004-02-26 2005-08-31 Alps Electric Co., Ltd. Diplexeur

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2337145A1 (fr) * 2009-12-18 2011-06-22 Thales Diviseur de puissance et dispositif de filtre compactes et ajustables

Also Published As

Publication number Publication date
CN101267220B (zh) 2011-07-27
US20100278197A1 (en) 2010-11-04
CN101267220A (zh) 2008-09-17
US8306067B2 (en) 2012-11-06

Similar Documents

Publication Publication Date Title
WO2008110040A1 (fr) Combinateur à double fréquence
WO2008110041A1 (fr) Multiplexeur double fréquence à bande ultra-large
WO2008141482A1 (fr) Synthétiseur double fréquence dcs/wcdma et synthétiseur double fréquence général
US7990319B2 (en) Radio device having antenna arrangement suited for operating over a plurality of bands
KR20110130389A (ko) Ｒｆ 전단 모듈 및 안테나 시스템
WO2018028066A1 (fr) Réseau d'alimentation de filtre et antenne de station de base
JP2008522533A (ja) 分散型ダイプレクサ
WO2018094994A1 (fr) Appareil et procédé d'alimentation d'antenne accordable électriquement
CN105098303A (zh) 一种具有双频带滤波功能的功率分配器
CN112332054A (zh) 一种基于非对称式耦合线的双通带带通滤波器
JP2000244207A (ja) 高周波回路装置、アンテナ共用器及び通信機装置
CN201018482Y (zh) 双频合路器
US7457640B2 (en) Dielectric loaded cavity filters for non-actively cooled applications in proximity to the antenna
CN109951170B (zh) 一种基于腔体谐振器的双频滤波开关
CN205159476U (zh) 一种具有双频带滤波功能的功率分配器
EP1135826B1 (fr) Dispositif filtrant a microrubans
CN103151589B (zh) 腔体射频器件的分合路结构及采用该结构的腔体射频器件
CN201508893U (zh) 多网共用器
CN102569955B (zh) 基于非对称支节加载谐振器的双频带通滤波器
CN108023148B (zh) 悬浮微带滤波装置和微带滤波装置
CN203242727U (zh) 腔体射频器件的分合路结构及采用该结构的腔体射频器件
CN101330302B (zh) 宽频带馈电器
CN110113073A (zh) 介质poi
CN216214003U (zh) 滤波器及通信设备
US20240039138A1 (en) Bias tees having a capacitance to ground

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07720734

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 6492/DELNP/2009

Country of ref document: IN

WWE Wipo information: entry into national phase

Ref document number: 12668298

Country of ref document: US

122 Ep: pct application non-entry in european phase

Ref document number: 07720734

Country of ref document: EP

Kind code of ref document: A1